Back to EveryPatent.com
United States Patent |
5,735,526
|
Mastandrea
|
April 7, 1998
|
Method for evaluation of shotgun round and target
Abstract
A method for the evaluation of the pattern of shot resulting from a single
shotgun round for purposes of optimizing the selection of ammunition type
and prediction of shot pattern, and a target for its implementation. The
shooter fires a single round at the target. Then a rotating overlay allows
the pattern of shot to be evaluated with respect to a center aim point and
an overlay axis and kill zone. The overlay is rotated through a series of
clockwise, then counterclockwise increments. At each increment, the target
is scored with respect to the overlay. The number of shot striking the
kill zone for each position of the overlay axis is computed and by
observation the shooter can determine the optimal ammunition for use with
the weapon and for a given type of game.
Inventors:
|
Mastandrea; Frank (1300 Hamilton Rd., Pittsburgh, PA 15234)
|
Appl. No.:
|
831500 |
Filed:
|
March 31, 1997 |
Current U.S. Class: |
273/378; 273/404 |
Intern'l Class: |
F41J 005/16 |
Field of Search: |
273/403,404,407,408,409,378
|
References Cited
U.S. Patent Documents
D262819 | Jan., 1982 | Dulude | D22/15.
|
4203600 | May., 1980 | Brown | 273/407.
|
5118116 | Jun., 1992 | Cherni | 273/408.
|
5181719 | Jan., 1993 | Cleveland, III | 273/409.
|
5275890 | Jan., 1994 | Wolf et al. | 428/514.
|
5415415 | May., 1995 | Mujic | 273/409.
|
5558337 | Sep., 1996 | Frank, III | 273/408.
|
Primary Examiner: Graham; Mark S.
Attorney, Agent or Firm: McKay, Esq.; Kenneth P.
Claims
What is claimed is:
1. A target for use in evaluating the shot spread and pattern for a
shotgun, to optimize the selection of ammunition, comprising:
a. a rectangular target background;
b. a circle circumscribed within said rectangular target background, said
circle having a center aiming point, a periphery, and a diagonal line as a
fixed vertical axis;
c. a multitude of regularly spaced radii propagating from said center
aiming point outward to and intersecting with said circle periphery;
d. a multitude of scoring areas, in a number corresponding to the multitude
of regularly spaced radii, each of said scoring areas being located
outside and adjacent to said periphery at a respective point of
intersection of said radii with said periphery;
e. a multitude of concentric, smaller circles within said circle and
focused about said center aiming point each having a small circle
periphery whereby the relative distance of said smaller circle periphery
from said center aiming point is usable for measuring;
f. a game animal picture in frontal view imposed upon said center aiming
point and having a kill zone comprising the game animal head area, game
animal neck area and game animal breast area;
g. a transparent overlay having a center of rotation and which is
superimposable over and rotatable about said center aiming point and
having an overlay pointer at its outermost point whereby an imaginary axis
extends through said center of rotation and said overlay pointer, said
imaginary axis corresponding to said fixed vertical axis in length, and
having a profile view of said game animal inscribed about said imaginary
axis, said profile view having an overlay kill zone comprising the profile
game animal head area, profile game animal neck area and profile game
animal breast area; and,
h. written instructions for the employment of said target printed in
between said periphery and said rectangular background.
2. A method for evaluating the shot spread and pattern of a shotgun, to
optimize the selection of ammunition, employing the target claimed in
claim 1, comprising the steps of:
a. directing a shotgun blast at said center aiming point whereby a pattern
of shot is imposed upon said target;
b. evaluating said pattern of shot whereby the number of shot striking the
target within said kill zone is observed and recorded;
c. placing said transparent overlay over said circle about said center
aiming point;
d. superimposing said imaginary axis over the radii of said target which is
one increment in the clockwise direction removed from said vertical axis;
e. observing said pattern of shot with respect to said overlay kill zone
whereby the number of shot striking the target beneath the overlay kill
zone is observed and recorded;
f. rotating said imaginary axis clockwise one increment marked by said
equally-spaced radii;
g. observing again said pattern of shot with respect to respect to said
overlay kill zone whereby the number of shot striking the target beneath
the overlay kill zone is observed and recorded;
h. repeating said observing of said pattern of shot for each clockwise
increment marked by said equally-spaced radii;
i. reversing said overlay;
j. superimposing said imaginary axis over the radii of said target which is
one increment in the counter clockwise direction removed from said
vertical axis;
k. observing again said pattern of shot with respect to said reference
position whereby the number of shot striking the target beneath the
overlay kill zone is observed and recorded;
l. rotating said reference position counter-clockwise one increment marked
by said equally-spaced radii;
m. observing again said pattern of shot with respect to said reference
position whereby the number of shot striking the target beneath the
overlay kill zone is observed and recorded;
n. repeating said observing of said pattern of shot for each counter
clockwise increment marked by said equally-spaced radii;
o. observing the optimum axis for said pattern of shot by evaluating each
of said observations whereby the reference position having the highest
number of shot striking said target beneath said overlay kill zone with
respect to said reference position is identified and recorded; and,
p. adjusting the selection of ammunition accordingly.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention is a method, and a target for its employment, for the
evaluation of the pattern of shot resulting from a single shotgun round
for purposes of optimizing the selection of ammunition type and prediction
of shot pattern.
As the type and manufacturer of shotgun rounds are varied for a given
shotgun, and shooting at the same target, the shooter will observe a
corresponding variation in the pattern of the shot among the varying
rounds. For the shooter who requires an exacting knowledge of the
resulting shot pattern, it is important to know the relative location of
the striking pattern and the density of striking shot with respect to the
aim point. This is most especially true on an axially-oriented target such
as the neck of game birds or small game which are moving rapidly
(stretched out). In fact, the profile of a game animal in the wild, in
real game hunting situations, is ever-changing.
2. Description of the Related Art
The prior art shows targets which are a variety of sizes and shapes. All
are intended to allow the sighting of weapons. Few are related
specifically to shotgun sighting. One such target, which is commonly seen
in use, is the circular target showing a game bird with its neck aligned
on the vertical axis (six o'clock position to the twelve o'clock
position). In using such a target, the shooter fires a round using the aim
point of the target center. He or she then inspects the target to see,
relative to the vertical axis and the target center, where the shot
pattern is most centrally focused, and then adjusts the aiming point. For
instance, if the shooter's inspection shows that there were 18 shot which
impacted the target and the center of the mass of all 18 shot was two
inches from center, on the axis running from the eight o'clock position to
the two o'clock position, the shooter would thereafter adjust the aiming
point two inches from center on the opposite axis (i.e., running from the
two o'clock position toward the eight o'clock position). However, this
does not accommodate the field conditions of the game being hunted, where
the linear target may be aligned in a radial direction other than
vertical. This is, in fact, the usual case, and the particular shooter is
concerned about the resulting deviation.
The prior art also shows some means of determining compensation of rounds,
but many such sighting mechanisms are complex and expensive. None are
easily determinative of the relative center of mass of shot such as
allowed for by the present invention.
PRIOR ART
U.S. Pat. No. 5,275,890 (Wolf et al), discloses a target which is comprised
of two substantially planar sheets. The front target sheet carries the
target at which the weapon is aimed. The color of the front surface of the
second sheet contrasts with the color of the first sheet thereby allowing
the user to perceive the results of each shot instantaneously. This
feature facilitates the user adjusting his or her shot instantaneously
without first having to view the target up close.
U.S. Pat. No. 4,203,600 (Brown) shows a target comprised of a freestanding
"life-size" model of a deer that serves as the general target. Into a slot
in the animal is placed a paper target sheet which is representative of
the internal organs of the animal and thus the desired "kill zones." This
removable sheet serves as the actual disposable target used for shot
pattern results and score recordings.
U.S. Pat. No. D262,819 (Dulude) shows a commonly available type of
commercial target with a center aiming point and a pattern for locating
the strike of ammunition relative to this aiming point.
There are a variety of commercial targets which also serve as prior art,
including target which are circular and have scoring grids imposed
thereon.
SUMMARY OF THE INVENTION
The objective of the present invention is to provide a more exact means of
analyzing the spread of shot which strikes a target, relative to an aim
point and an axis, and accounting for the fact that an actual game animal,
as a target and while being hunted, has an ever-changing profile. It is
intended for use with shotguns.
This method and the respective target is particularly useful when selecting
ammunition based on the type of game to be hunted and the proximity of the
game, wherein the shooter may best predict the shape of a shot pattern
with respect to an aiming point and a target profile.
This is accomplished by use of an overlay to the target, which rotates
incrementally around the target along a series of axes, thereby providing
a relative means of assessing the strike, based on a single round into the
target, as follows.
The Method for Evaluation of Shotgun Round and Target comprises the use of
a circular target surface, sub-divided into a multitude of axially divided
(wedge-shaped) segments. The center circular area of the target, focused
around the center aiming point, contains a game animal in frontal profile,
designated a "kill zone". The kill zone is subdivided into circular
divisions for enumeration of the shot. The number of segments used varies
on the accuracy of evaluation desired by the shooter.
In the Method, a single shot is directed to the target at a center aim
point.
An observation of the target is then made. With respect to the vertical
axis through the center, the number of shot striking the frontal profile
is recorded by the shooter in the scoring area at the end of the center
axis at the 12 o'clock position. An overlay then is used to determine the
relative location of the shot pattern with respect to the varying
inclination of the selected game animal kill zone. The overlay is a side
profile of the same selected game animal and is meant to represent that
animal in a different perspective. The overlay is transparent such that
the shot pattern may be observed through the overlay. The rotating overlay
has a similarly defined "overlay kill zone" but having a different area
comprised therein.
The overlay is superimposed over succeeding axis alignments (i.e., the
seven o'clock to one o'clock position, then the eight o'clock to two
o'clock position). The shooter determines, on the basis of the rotated
axis, the number of shots striking the overlay zone, and records that
score. An area for recording is provided at the outer peripherary of the
target. The overlay axis is incrementally rotated clockwise onto each
axis. Upon completion of the clockwise rotation, the overlay is reversed
for succeeding super-positioning over the counterclockwise segments. The
overlay is rotated counterclockwise, starting at the five o'clock to
eleven o'clock axis, succeedingly through all of the left side axis,
recording the shot strike accordingly. It is important to note that the
scores are recorded for the same shotgun round, only with respect to
varying perspectives through the overlay axis, as it is rotated.
In the preferred embodiment of the present invention, this is accomplished
by the addition of all shot striking the kill zone in each increment and
with respect to the game profile resulting from the respective
superposition of the overlay. For instance, if the target game of concern
is a turkey, the shooter superimposes an overlay having as its
longitudinal axis a figure comprising the kill zone of a turkey (head,
neck, upper breast) and determines how many shot would have impacted the
game animal in the kill zone had the target been the game animal in the
position indicated by the overlay in its respective relative position. As
the axis is rotated, the number of shots in each rotating kill zone is
recorded. At the completion of the evaluation, the shooter can readily
observe which kill zone contains the highest number of shot.
The shooter observes that, if there is a cluster of axes where the relative
number of strikes in the kill zone becomes apparently the most
advantageous, the shooter can conclude that this ammunition is most
effective for the game animal represented by the target, in the above
example, a turkey. That conclusion assures the shooter that, regardless of
the orientation of the game animal "kill zone", with respect to any center
aiming point, his opportunity for a fatal strike upon the animal is the
greatest.
The invention, in its preferred embodiment, comprises the use of a target
with twelve axial segments and an overlay used to count the shot on a
rotating basis. This forms thirteen axes propagating as radii from the
center of the target, thereby allowing as many as thirteen evaluations.
The number of shots is recorded in a figure located at the outer boundary
of each of the respective thirteen vertical axes of the circular target.
These thirteen individual target areas may also be used for other weapon
sighting adjustment, for instance, an adjustment of a rifle which can be
fired many times, respectively at each of the thirteen individual targets.
For ease of use, complete instructions may be printed on the target and
overlay, explaining the system for the shooter. Also included is a
conventional scoring chart for recording the conventional circular shot
pattern adjustment as a permanent record for a given weapon, using a given
type and maker of ammunition.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram showing the Method for Evaluation of Shotgun
Round and Target showing the principal steps for use in the Method.
FIG. 2 is a view of the target used in the Method for Evaluation of Shotgun
Round and Target showing the target in its complete assembly.
FIG. 3 is a view of the overlay used to rotatably determine the relative
shot pattern around each segment of the target.
FIG. 4 is a view of the target without an overlay, a shot having been fired
at an aiming point in the center, meant to be demonstrative of game with a
linear target in the upright and frontal position.
FIG. 5 shows a view of the target, with the same shot pattern, but with an
overlay in the eight o'clock to two o'clock axis, showing a pattern of
shot around that axis. It can be observed that the relative spread of shot
is different for the evaluation with respect to the overlay as compared to
the evaluation for the target about the vertical axis.
FIG. 6 shows a preferred embodiment of a target whereby instructions are
given the shooter in the upper right and lower right target quadrants.
FIG. 7 shows the preferred embodiment of a target whereby instructions and
conventional scoring records are given in the upper left quadrant.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 shows the subject invention in a step form for ease and clarity of
understanding which will be referred to herein as the system is explained.
FIG. 2 shows a target for use in the Method. The sighting target is a form
whereby a large circle 10 encompasses a multitude of smaller circles 11
all originating from the same center aim point 12. Propagating from the
center aim point 12 are a multitude of radii 13, equally spaced
circumferentially around the target from the center vertical axis 14. A
multitude of smaller circles 11 are encompassed within the larger circle
and spaced from each other such that relative radial distance from the
center may be determined.
The shooter takes careful aim at the center aim point 12 and fires a single
round at the target. The object of the shot is to direct the round at the
center aim point 12 which is the exact geometric center of the target. The
center vertical axis 14 runs from the six o'clock to the twelve o'clock
position. The shooter evaluates the target with respect to the strike of
the shot relative to the center vertical axis 14. Contained at the center
of target, circumscribing the center aim point 12 is a kill zone 9 which
portrays the vital portion of a game animal in frontal view.
FIG. 3 shows the overlay 20 used to rotatably determine each segment center
axis in an embodiment which has an overlay pointer 15 at the end and
having with a radial length less than the radius of the large circle 10.
It is transparent and having an overlay kill zone 30 similarly configured
to, but larger than, the kill zone 9 except portraying the game animal in
profile.
At overlay point 16, the overlay may be aligned with the center aim point
12. Overlay pointer 15 may be rotatably aligned thereby aligning with any
of multitude of radii 13.
FIG. 4 demonstrates the target after a single shotgun round was discharged
at its center aim point 12 allowing a multitude of shot 17 to impact the
target.
FIG. 5 shows the same shot pattern comprised of a multitude of shot 17
having overlay 20 superimposed along a radii from the eight o'clock to two
o'clock direction. The shooter then observes the target using the overlay
20 as follows. First the overlay 20 is positioned over the next of the
segments formed between adjoining multitude of radii 13 and the center
vertical axis 14. This is accomplished by aligning overlay pointer 15 over
a multitude of radii 13 as a selected axis. The overlay point 16 is
aligned over center aim point 12. The spread of the shot is evaluated at
this observation point by evaluating where the largest number of shot have
struck the target. The evaluation consists of scoring the number of shot
which has struck beneath the overlay kill zone 30. At the end of each
multitude of radii 13 on the outer periphery of the target is a scoring
area 31, used for the recording of the score with respect to each axis of
rotation, reflecting a smaller, but relatively proportioned overlay kill
zone.
The observation is then repeated for every radii as the overlay is rotated,
first clockwise from the seven o'clock to one o'clock position forward
through the last of the clockwise segments comprised of the areas between
adjoining radii 13.
The observation for the counterclockwise segments is then conducted, first
by reversing the profile of the overlay 20, first at the eleven o'clock to
five o'clock position and then scoring counterclockwise around the target
as was accomplished for the clockwise segments.
The multitude of shot 17 shows a different configuration when comparing the
pattern about the center vertical axis 14 as relative to the pattern when
observed through the overlay 20. From subsequent rotations of overlay 20,
along different radii 13, the user may determine the optimal type of
ammunition for a given weapon, at a known distance and for a chosen target
figure or game. In the preferred embodiment, this is accomplished by
summing the number of shot impacting the kill zone 30 for each axial
alignment. At the end of the assessment, the number of shots impacting
each kill zone 30 may be assessed to determine the most appropriate
ammunition for use with the weapon.
FIG. 6 shows the preferred embodiment whereby instructions are given the
shooter in the upper right target quadrant 21 and lower right target
quadrant 22 for the use of the target and easy reference.
FIG. 7 shows the preferred embodiment whereby additional instructions and a
conventional scoring record is given in the upper left target quadrant 23.
This allows the user to maintain a permanent record of his scoring for a
conventional, single shot at the center aim point 12.
Top